Finding the Fourth Proportional to 21,562.84, 29,756.38 and 12,131.42

Step by Step Solution

1. Step 1: Write the proportion equation
   21,562.84 : 29,756.38 = 12,131.42 : x
2. Step 2: Convert to fraction form
   21,562.84/29,756.38 = 12,131.42/x
3. Step 3: Cross multiply
   21,562.84x = 29,756.38 × 12,131.42
4. Step 4: Simplify right side
   21,562.84x = 360,987,082.80
5. Step 5: Solve for x
   x = 360,987,082.80/21,562.84
6. Step 6: Final answer
   x = 16,741.17